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You are here: Home / History / Why are very hot days sometimes called ‘dog days’?

Why are very hot days sometimes called ‘dog days’?

First of all it has nothing to do with dogs!

The term is a throwback to the Ancient Roman who thought that Sirius – the Dog Star – added its heat to that of the sun from 3 July to 11 August creating exceptionally high temperatures.

The Romans called this period ‘Dies Caniculares’ or ‘Days of the Dog’ – hence the reason why hot days are sometimes now referred to as dog days.

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